This book, "100+1 English words of Greek origin", is dedicated to those who love the Greek language, the language of Homer, Plato, and Aristotle, the language of the Holy Gospels, and the Fathers of the Eastern Orthodox Church, the language of General Yannis Makriyannis, Giorgos Seferis, and Odysseas Elytis. It is one of the educational tools used in the courses taught in Gnomon Greek Language and Culture School which have the title "Ancient and Modern Greek Language, History, and Culture Courses for people of all ages". The book is written according to modern readers\' profile: it is brief (it contains no more than 101 lemmata), intuitive (only the basic elements of every word\'s etymological evolution are given), and bilingual (it is written in Greek and English). Thus, regarding language, it can help someone who speaks Greek to improve their English level, as well as vice versa, that is, it can help someone who speaks English either to improve their Greek level (in case they have forgotten Greek) or to start learning it. As for etymology, it can introduce readers to its marvelous world in a mild and pleasant way.